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Principal Research Engineer, Post-Training @ Character.AI

Redwood City, California, USOnsiteFull Time
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About this role

Principal Research Engineer, Post-Training at Character.AI. Location: Redwood City, California, United States. Role: defining roadmap, mentoring engineers, developing models Requirements: PhD or equivalent experience in CS/ML/AI, significant leadership in ML or distributed systems, deep knowledge of transformers, RL, alignment, experience with large-scale model training and production ML systems. Category: Research and Development (R&D) Seniority: Senior Level Tools: Mistral, Qwen, Kubernetes, Docker, GPU, A/B testing frameworks Commitment: Full Time Workplace: Onsite Languages: English

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